“免费梯子”通常指无需付费即可使用的翻墙工具或代理服务。
它们看起来方便，但潜藏多种风险：部分服务会记录用户流量并出售数据，存在植入广告或恶意软件的可能，连接不稳定且速度往往较慢。
此外，部分免费服务的加密强度不足，无法有效保护隐私和敏感信息。
使用此类工具前，应注意服务的信誉、隐私政策和技术保障，尽量避免在不可信网络中传输重要数据。
对于需要长期稳定与高隐私性的场景，建议选择有口碑的付费服务或采用合规的企业级解决方案。
无论使用何种工具，都应遵守当地法律法规，合法合规上网，保护个人信息安全。
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